Dr. Lee Hyukjae is fascinated by distances, every single day he learns to lock himself behind the numbness, yet everyday he searches for something that keep him here, alive and awake. Dr. Lee Donghae lives for everyone around him, counting his days to deplete his whole self to patients, but never learns to love himself back... 

Everyone thought they know Dr. Lee Hyukjae, but no one's ever looked past his coldness and intelligence to see who he really is. Everyone thought they know Dr. Lee Donghae too-cute, friendly and silly, but his swaggering personality has faults that he tried hard not to reveal... Then Hyukjae met Donghae, and their worlds changed.